Drilling machine



H. L. BROWNE DRILLING momma June 15 1926.

Filed May 18, 1920 luau ' I Inveidor: HaroZdL.Bvowaw,

. Patented June 15, 192%.

HARGL or nosron, mssrcaeserrs DRI'LIING- Application filed. m -'18,

The invention relates to drilling machines and particularly, but not exclusively to those of the percussive type and in this-re spect 'concerns'means for rotating the drill steel of a hammer rook drill.

The invention will be best understood 1 1 in the following description when read in connection with the accompanying drewings of an example of the in-ventiom 'while the scope of the invention will be particularly pointed out inthe appended claims;

In the drawings:

Fig. 1 shows a longitudinal through a hammer rock drill;

1 Fig. 2 shows a section on the line 2- of Fig. 1"; and v t Figs. 3 and 4- show sections on thel-in'es and 4-4of Fig. 1; 5 Referring 'to the drau' ings, the embodiment of the invention submitted includes a casing" comprising a cylinder inenfi-ber 1 end a front head structure 2. In the front hea'd structure is rotatably mounted a chuck having a rearward portion 3 and connected section I polygonal recess for receivingthe polygons-l end 5 oil the drill steel 6. In the cylinderv member is mounted a piston 7 to which is integrally secured a hammer bar 8 extending into the front headstructure, the hammer her being provided with an extension '8 of reduced diameter surrounded by the chuck. The piston is preferably reciprocated by means of compressed air or other motive fluid in any suitable manner as Will be readily understood by those skilled in the art. p

With the present construction the chuck is rotated during each stroke ofth'e piston and in the sanredirection. For this pub pose the present construction provides therein rings 9 and 9 which surround the hammer her, these rings being; mounted in the front head. structnre and having re duced portions 10 and 11 providing exterior bearings for the rings in thefront head, structure and cylinder member respectively. These rings are connected to thehammer bar by grooves 12 and 1.3 formed in the latter and which cooperate with followers in the form oi? lugs 14. formed interiorly of the and extending longitudinally throughout ti eir length. 'lhe rearward portion 3 of the chuck is herein provided with e nut 15 on which is formed follower lugs thereto a forward portion 4 provided with rotation of said rings in only "one d HAGHEINE'.

1920. Serial 382,243.

16 cooperatingwithgrooves 17 formed in the hammer her, these lugs and grooves being similar to the lugs ll and grooves -12 and 13 just described. Preferably,. the

formed parallel to'the aegis of the hammer It will be noticed that the grooves 12,

13 and 1"? and the lugs 14 and 16 provide a connection for'the hammer bar with the chuck "which comprises surfaces and cooperating iollowers, one. of which suriaces is parallel to the axis of the bar end two of Which are oppositely oblique to s cl axis while each of said surfacesis oblique to each o f theother surfaces. i I or intermittently clutdhing the rings to the casing are shown clutch or intermittent grip mechanism in the form of teeth 18 formed on the exterior surface'oif the rings and cooperating .pawls' 19- cerried by the casing; Cooperating with the pawls' are spring pressed plungers 20 for holding the same in contact with theteeth.

When the piston is 'reci roceted, the grooves 12' and I3 tend to rotate the rings 9 and '9 in opposite directions and as the teeth 18 on the rings are formed to aerrh'it which is the -same"dir'eetion for each, the piston is rotated on et'ch stroke in the same direction by one or the other of the rings through their lugs. a'i'idc'oop'e'ratlng grooves. hen the piston rotates, it rotates the chuck by means of the groovesi'l'i and follower lugs 16. reason of the fa'etthatthe grooves l2fand13 are herein at equal opposite angles to the groove 17, it follows with this construction that on each stroke of the piston, the chuck is rotated through the same angle and in the same direction.

For purposes of ll'ustrstion l have" dis closed one specific embodiment o'frmy inven tion. It is to be understood,however, "that my inventionis not limited to this embodt Inent and that extensive deviations from the samemay "be made Without departing from the spirit of .niyinvention,

1. In ahammer rock'drill, a casing having a forward chamber and a rearward chamber separated from said forward chamber b an axially perforatedwa'llya chuck moimte for rotation in said forward chamber, shamm'er piston having a head mounted'for re- L. snownn, or nono'rrron, MICHIGAN, Asst-snort re essee-Etienne,

tions, a lug on one ring entering one helical groove and a lug on the other ring entering the other helical groove, a straight groove on the portion of said bar entering said rearward socket of said chuck, and a lug on said chuck entering said straight groove.

2. In a rock drill, a hammer piston, a chuck, a drill steel carried by said chuck,

said drill steel being operated by permission imparted by said hammer piston, means forming a slidable interlocking connection between said piston and chuck causing one to rotate when the other rotates, and a plurality of intermittent grip devices cooperating with said hammer piston and having slidable interlocking oppositely pitched cam connections therewith for continuously rotating said piston in the same y direction in response to reciprocat-ionof said piston.

In a drilling machine, a cylinder, a piston therein mounted for rotation and having a hammer bar, a pair of ratchet rings surrounding said hammer bar, means permitting said rings to rotate in but one andthe same direction, a chuck, a drill steel carried by said chuck and to which percussion is imparted by said piston and hammer bar, separate means connecting said hammer bar to said chuck and to each of said rings, at least two of said separate means providing an oblique cam and a cooperating follower, and means for reciprocating said piston whereby said chuck and said piston are rotated in the same direction through said connecting means during each direction of reciprocation of the piston.

4. In a'drillmg machine, a cylinder, a

piston therein mounted for rotation and having a hammer bar, a pair of ratchet rings surrounding said hammer bar, means per mitting said rings to rotate in but one and the same direction, a chuck, a drill steel carfied by said chuck and to which percussion is imparted by said piston and hammer bar, separate means connecting said hammer bar to. said chuck and to each of said rings, each of said separate means providing a surface andla cooperating follower and each of said surfaces being angularly disposed relatively to each of the other surfaces, and means for reciprocating said piston whereby said chuck and said piston are. rotated in the same direction through the connecting means during each direction of reciprocation of the piston. f

5. In a drilling machine, a cylinder, a piston therein mounted. for rotation and having a hammer bar, a pair of ratchet rings surrounding said bar, a chuck, a drill. steel carried by said chuck and to which percussion is imparted by said piston and hammer bar, oppositely oblique grooves and followers connecting the respective rings to said bar, a groove parallel to the axis of the bar and a cooperating follower connecting said chuck to said bar, and means for intermittently preventing rotation of said rings, but allowing them to rotate in the same direction whereby both said piston and said chuck are rotated in the same direction during each direction of reciprocation of said 'plston.

6. In a drilling machine, a cylinder, a piston therein mounted for rotation and having a hammer bar, a pair of ratchet rings surrounding said hammer bar, means permitting said rings to rotate in but one and the same direction, a chuck, a drill steel carried by said chuck and to which percussion is imparted by said piston and hammer bar,

separate means connecting said hammer bar to said chuck and to each of said rings, at least two of said separate means providing oppositely oblique cams of the same pitch and a cooperating follower, and means reciprocating said piston whereby said chuck and said piston are rotated at the same speed in the same direction through said connecting means during each direction of reciprocation of the piston.

7. In a drilling machine, a cylinder, a piston therein mounted for rotation and having a hammer bar, a pair of ratchet rings surrounding said hammer bar, means permitting said rings to rotate in but one the same direction, a chuck, a drill steel carried by said chuck and to which percussion is imparted by said pist on and hammer bar, separate means connecting said hammer bar to said chuck and to each of said rings, each of said separate means providing a surface and a cooperating follower and each of said surfaces being angularly disposed relatively to cacn of the other surfaces, and means for reciprocating said piston whereby said chuck and said piston are to tated at the same speed in the same direction through the connecting means during each direction of reciprocation of the piston.

8(In a drilling machine, a cylinder, a piston therein mounted for rotation and having a hammer bar, a pair of rotatable ratchet rings surrounding said bar, a chuck, a drill steel carried by said chuck and to which percussion is imparted by said piston and hammer bar, oppositely oblique grooves of the same pitch and followers connecting the respective rings to said bar, a groove parallel to the axis of the bar and a cooperating follower connecting said chuck to said bar, and means for intermittently preventing rotation of said rings, but allowing them to rotate in the same direction whereby both said piston and said chuck are rotated at the same speed in the'same direction during each direction of reciprocation of said piston.

9. In a rock drill, a casing, a hammer pis ton, a chuck, a drill steel carried by said chuck, means including a hammer piston for percussively actuating said drill steel, a pair 'of intermittent grip'devices each having a ratchet and pawl connection with said casing permittingsaid-devices to rotate in only one and the same direction, a spiral groove and cooperating lug connecting said piston to one of said devices and an oppositely pitch-ed spiral groove and cooperating lug connecting said piston to the other of said devices, and a sliding interlocking connection between said piston and chuck causing one to rotate when the other rotates.

10. In a hammer drill, a casing having a reciprocatory hammer piston therein, a-

members, means slidably connecting said piston to said members and chuck, and

means for alternately holding said members agalnst movement for enforcing rotation of said chuck through said connections in the same direction for each direction of movement of the piston.

12. In a hammer drill, a hammer piston,

a chuck, a plurality of a ngularly movablev members, lug and slot connections between the piston and each of said members and chuck, the effective surfaces of each of said slotsbeing vat a different angle to the effective surfaces of each of the others, and means for intermittently preventing rotation of said members for enforcing rotation of the chuck for each reciprocation of said piston. 7

13. In a hammer drill, a hammer piston,

a chuck, a plurality of angularly movable members, lug and slot connections between the plston and each of said members and chuck, the efiective surfaces of each of said slots being at a different angle to the ef fective surfaces of each of the others, and

means for intermittently preventing rotati'on of said members for enforcing rotation of the chuck for each reciprocation of said piston at the same speed. i I V V 14. In a hammer drill, a hammer jpiston, a chuck, a plurality of angularly movable members, lug and slot connections between the piston and each of said members and chuck, the effective surfaces of each of said slots being at a different angle to the effective surfaces of each of' the others, and means for intermittently preventing rotation of said members for enforcing rotation of the chuck for each reciprocation of said piston in the same direction.

l5. In a hammer drilLahammer piston, a chuck, a plurality of angularly movable members, lug and slot connections between the piston and each of said'members and chuck, the effective surfaces of each of said slots being at a different angle to the e'ffective surfaces of each of the others, and means forintermittently preventing rotation of said members for enforcing rotation of the chuck for each reciprocation of said piston in the same dir ction and at the same speed. i j V 16. In a drilling machine, a drilling tool, a reciprocatory piston for rotating said tool, means coacting with said'piston and tool for enforcing rotation of said tool in the same direction and at the same speed for each direction of movement of said piston, and said means causing said piston to rotate on one of its strokesin the same direction as said tool. V

17. In a hammer vdrill, a piston, a chuck, two. angularly movable members, slot and groove connections between the piston and each of said members and the chuck, the

effective surfaces of the grooves of two of said comiectio'n's being oblique to the direction of reciprocation of the piston and that of the third being in the same direction as that of such reciprocation, and means for alternately preventing rotation of said me1nbers to cause the piston to rotate the chuck for each direction of reciprocation of the piston.

18. In a hammer drill, a piston, a chuck,

two angularly movable members, slot and "groove connections between the piston and each of said members and the chuck, the eifectivesurfaces of the grooves of two of said connections being oblique to the directionofreciprocation of the piston and that of the third being in the same direction as that of such reciprocation, and means for alternately preventing rotation of said memhers to cause the piston to rotate the chuck in the same direction for each direction of reciprocation of the piston. I

119. Ina hammer drill, piston,a chuck, two angularly movable members, s'lotand groove connections between the piston and:-

each of said members and the. chuck, the

' angles between effective surfaces of the grooves of two of said connections being oblique to the direction of reciprocation of the piston and at different angles to each other and that of the third being in the same direction as that of such reciprocation, and means for alternately preventing rotation of said members to cause thepiston to rotate the chuck for each direction of reciprocation of the piston.

20. In a hammer drill, a piston, a chuck, two angularly movable members, slot and groove connections between the piston and each of said members and the chuck, the effective surfaces of the grooves of two of said connections being oblique to the direction of reciprocation of the piston and at different angles to each other and that of the third being in the same direction as that of such reciprocation, and means for alternately preventing rotation of said members to cause the piston to rotate the chuck in the same direction and at the same speed for each direction of reciprocation of the piston.

21. In a hammer drill, a hammer piston, a chuck, a plurality of angularly movable members, means connecting said piston to said members and to said chuck, means for intermittently preventing rotation of said members whereby said chuck and piston are moved angularly, said means and connections providing that the movements of said piston, chuck and members will be in the same direction.

22. In a drilling machine, means forming a casing having a chamber, .a piston in said chamber, a chuck mounted for rotation in said chamber, a plurality of members in said chamber having bearings exteriorly of the piston rot'atably supporting them against substantial longitudinal movement relative to said casing, means connecting said piston to said members and to said chuck, each of said means providing a sur face anda cooperating follower and each of said surfaces being at an angle to each of the other surfaces, and means for pre venting rotation of said members alternately' on opposite strokes of said piston, the said surfaces being such that said chuck rotated during each direction of reciprocatidu of said piston.

23. In a drilling machine, means forming a casing having a chamber, a piston in said chamber, a clnick mounted for rotation in said chamber, two members in said chamber having bearin gs exteriorly of the piston rotatably supporting them against substantial longitudinal movement relative to said casing, means connecting said piston to said members and iJO-SZIiCl chuck, each of said means providing a surface and a cooperatin follower, two er said surfaces being ohique to the axis at said piston and an angle to each other and the other surface being parallel to said axis, means for preventing rotation of said members alternate- 1y on opposite strokes of said piston, the angles between said surfaces beingsuch that said chuck is rotated during each direction of reciprocation of said piston.

9A, In a drilling machine, means forming a casing having a chamber, a piston in said chamber, a chuck mounted for rotation in said chamber, two members in saidchamber having bearings exteri'orly of the piston rotatably supporting them against substantial longitudinal movement relative to said casing, means connecting said piston to said members and to said chuck, each of said means providing a surface and a cooperating follower, two of said surfaces being oppositely oblique to the axis of said piston and the other surface being parallel thereto, and means for'preventing rotation ofsaid members alternately on opposite strokes of said piston whereby said chuck is rotated during each direction of reciprocation of said piston.

25. In a drilling machine, means forming a casing having a chamber, a piston in said chamber, a chuck mounted for rotation in said chamber, a plurality of members in said chamber having bearings exteriorly of the piston rotatably supporting them against substantial longitudinal movement relative to said casing, means connecting said piston to said members and to said chuck, each of said means providing a surface and a coopcrating follower and each of said surfaces being at an angle to each of the other surfaces, means for preventing rotation of said members alternately on opposite strokes of.

said piston, the angles between said surfaces being such that said chuck is rotated in the same direction during each direction of reciprocation of said piston. I

26. In a drilling machine, means forming acasing having a chamber, a piston in said chamber, a chuck mounted for rotation in said chamber, a plurality of members in said chamber having bearings 'eXteriorly of the piston rotatably supporting them against substantial longitudinal movement relative to said casing, means connecting said piston to said members and to said each of said means providing a sur-- chuck, face and a cooperating follower, two of said surfaces being oblique to the axis of said piston and at an angle to each other, and the other surface being parallel to said axis, means for preventing rotation of said members alternately upon opposite strokes of said piston, the angles between said surfaces being such that said chuck is rotated in the same direction during each direction of reciprocation of said piston.

27. In a drilling machine, means forming a having a chamber, a piston in said chamber, a chuck mounted for rotation in chamber, a chuck mounted for rotation in said chamber, a plurality of members in said chamber having bearings eXteriorly of the piston rotatably supporting them against substantial longitudinal movement relative to said casing, means connecting said piston to said members and to said chuck, each of said means providing a surface and a cooperating follower and each of said surfaces being at an angle to each of the other surfaces, and means for preventing rotation of said members alternately on opposite strokes of said piston, the angles between said surfaces being such that said chuck is rotated at the same speed in the same direction during each direction of reciprocation of said piston.

28. In a drilling machine, means forming a casing havlng a chamber, a piston 1n said said chamber, two members in said chamber having bearings exteriorly of the piston rotatably supporting them against substantial longitudinal movement relative to said casing, means connecting said piston to said members and to said chuck, each of said is means providing a surface and a 00- operating follower, two of said surfaces being oblique to the axis of, said piston and at an angle to each other, and the other surface being parallel to said axis, and

means for preventing rotation of said memhers alternately upon opposlte strokes of H. L. BROWNE. 

